Installing the bottom catalytic converter of cylinders 1 to 4

NOTE: RISK OF DAMAGE
Damage to the gasoline particulate filter .
Forcibly removing, installing or dropping the gasoline particulate filter down will damage it .

Remove and install the gasoline particulate filter without damaging it and without applying external force.
Avoid impacts/knocks to the gasoline particulate filter (e.g. by tools, falling down, hard contact with base).

NOTE: TECHNICAL INFORMATION
After exchanging the gasoline particulate filter, and before delivering the vehicle to the customer, the registration of the gasoline particulate filter must be carried out!

Replace seal (1).
Parts: Gasket
Position seal (1) on bottom catalytic converter near engine (2).
Guide in and position the bottom catalytic converter near engine (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Attach bottom catalytic converter near engine (1) to lug (2) and secure against falling down.

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Replace nuts (1).
Parts: Nuts

Tighten nuts (1) on bottom catalytic converter near engine (2).

TIGHTENING TORQUE SPECIFICATIONS

Gasoline particulate filter or catalytic converter near engine to the bottom of catalytic converter, snug torque
Nut M8	Tightening torque 17 Nm

G14261734

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Tighten screws (1) on bottom catalytic converter near engine (2).

TIGHTENING TORQUE SPECIFICATIONS

Gasoline particulate filter or catalytic converter near engine to the bottom of the transmission, snug torque
M8x20 screw	Tightening torque 8 Nm

G14261735

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten nuts (1) on bottom catalytic converter near engine (2).

TIGHTENING TORQUE SPECIFICATIONS

Gasoline particulate filter or catalytic converter near engine to the bottom of the catalytic converter, tightening torque
Nut M8	Tightening torque 28 Nm

G14261734

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten screws (1) on bottom catalytic converter near engine (2).

TIGHTENING TORQUE SPECIFICATIONS

Gasoline particulate filter or catalytic converter near engine to the bottom of the transmission, tightening torque
M8x20 screw	Tightening torque 19 Nm

G14261735

Courtesy of BMW OF NORTH AMERICA, INC.

Install heat shield (2).

Tighten nuts (1).

TIGHTENING TORQUE SPECIFICATIONS

Retaining plates for vehicle underbody cover
Sheet metal nut/plastic nut Replace nuts.	tightening torque 3 Nm

G14261733

Courtesy of BMW OF NORTH AMERICA, INC.

Insert underbody protection (1) and position correctly.

Tighten screws (arrows).

TIGHTENING TORQUE SPECIFICATIONS

Undershield/frame
Hexagon screw	tightening torque 3 Nm

G14391077

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Feed in the thrust field (4) in the area (5) of the wheel arch trim panel and position it on the front subframe.
Replace the bolts (arrows).
Parts: Screws

Tighten screws (arrows).

TIGHTENING TORQUE SPECIFICATIONS

Thrust field to front axle support
M10 Replace screws.	Joining torque 56 Nm Angle of rotation 90°

G14390901

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Tighten down screws (3).

TIGHTENING TORQUE SPECIFICATIONS

Cover, steering unit
Thermoplastic hexagon screw	Tightening torque 2.6 Nm

Tighten down screws (2).

TIGHTENING TORQUE SPECIFICATIONS

Wheel arch cover
Thermoplastic hexagon screw	Tightening torque 2.6 Nm
Plastic nut	Tightening torque 2.6 Nm

Tighten down screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Undershield/frame
Hexagon screw	tightening torque 3 Nm

Follow-up work

Refer to REMOVING THE STIFFENING PLATE .
Refer to INSTALLING THE STIFFENING PLATE .
Refer to INSTALLING EXHAUST SYSTEM .
Refer to INSTALLING THE PROTECTIVE PLATE ON THE TRANSMISSION .
Refer to INSTALLING THE LEFT AND RIGHT REAR DIFFUSER .
Refer to INSTALLING THE REAR LEFT AND RIGHT TENSION STRUT .
Refer to INSTALLING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .